DIN 100Cr6 Bearing Steel

A 370mm round bar of 100Cr6 Steel

OTAI SPECIAL STEEL is 100Cr6 bearing steel stockholders and suppliers from china. more 16 years experience in DIN 100Cr6 steel plate, round bar, flat bar, square bar , pipe/tube supply.

DIN 100Cr6 bearing steel is a?high?quality Alloy Bearing steel, It?belong to the high quality high carbon, alloy chromium,manganese ?steel. 100Cr6 Oil Quenched & Tempered Hardenss is 28-34 HRC. DIN 100Cr6 steel Annealing delivery hardenss less than 250HB.

DIN 100Cr6 Alloy bearing steel?properties is a chromium,manganese alloy steel specification. 100Cr6 is equivalent to AISI 52100, GB GCr15. Most applications can replace each others.

Related Specifications?ASTM A29/A29M DIN EN 10083/3 JIS G4053 GB GB/T 3077

100Cr6 steel Data PDF files Down

Form of Supply

DIN 100Cr6 bearing steel, we can supply the round bar, steel flat bar, plate, hexagonal steel bar and steel square block. DIN 100Cr6?steel Round bar?can be sawn to your required lengths as one offs or multiple cut pieces. 100Cr6 bearing steel Rectangular pieces can be sawn from flat bar or plate to your specific sizes. Ground tool steel bar can be supplied, providing a quality precision finished bar to tight tolerances.

Chemical composition

C(%) 0.93~1.05 Si(%) 0.15~0.35 Mn(%) 0.25~0.45 P(%) ≤0.025
S(%) ≤0.015 ?Cr(%) 1.35~1.60

Heat treatment Related

  • Annealing of 100Cr6 Alloy bearing steel

Slowly heated to 790-810 ℃ and allow enough times, let the steel to be thoroughly heated, Then cool slowly in the furnace. Different annealing ways will get different hardness.The 100Cr6 bearing steel will get Hardness MAX 248 HB (Brinell hardness).

  • Quenching and temperature of 100Cr6 Alloy bearing steel

Heated slowly to 860°C, Then quenching by oil get 62 to 66 HRc hardness. High temperature tempering: 650-700℃,cool in air, get hardness 22 to 30HRC. Low temperature tempering: 150-170 ℃, Cool? in ari, get 61-66HRC hardness.

  • Hot work and cold work of 100Cr6 Alloy bearing steel

Din 100Cr6 steel can hot worked at 205 to 538°C, 100Cr6 Bearing steel can be cold worked using conventional techniques in the annealed or normalized conditions.

Mechanical Properties

The mechanical properties of annealed DIN 100Cr6 bearing steel (typical for steel) are outlined in the table below:

Tensile Yield Bulk modulus Shear modulus Poisson’s ratio Thermal conductivity
MPa Mpa Gpa Gpa ?W/mK
520 415 Min 140 80 0.27-0.30 46.6


DIN 100Cr6 steel is widely used for a variety of applications in the used to the bearings in rotating machinery. Typical applications such as valve bodies, pumps and fittings, the high load of wheel, bolts, double-headed bolts, gears, internal combustion engine. Electric locomotives, machine tools, tractors, steel rolling equipment, boring machine, railway vehicle, and mining machinery transmission shaft on the steel ball, roller and shaft sleeve, etc.

Regular size and Tolerance

1) Hot Rolled round bar
Diameter Tolerance
Diameter Tolerance
≤12.70 -0.13 ~0.30 >50.80~63.5 -0.25~0.76
12.7~25.40 -0.13~0.41 >63.50~76.20 -0.25~1.02
>25.4~38.10 -0.15~0.51 >76.20~101.60 -0.30~+1.27
>38.1~50.80 -0.20~0.64 >101.60~203.20 -0.38~3.81
2) Hot Rolled steel plate
Thickness Tolerance
Thickness Tolerance
≤25.4 -0.41~0.79 >127~152 -1.60~2.39
>25.4~76 -0.79~1.19 >178~254 -1.98~3.18
>76~127 -1.19~1.60 >254~305 -2.39~3.96

Others 100Cr6 have not specified size, pls contact our?experienced sales team.


DIN 100Cr6 bearing steel round bar and flat sections can be cut to your required sizes. 100Cr6 bearing steel ground bar can also be supplied, providing a high quality tool steel precision ground tool steel bar to your required tolerances. DIN 100Cr6 steel is also available as Ground Flat Stock / Gauge Plate, in standard and nonstandard sizes.

Contact our experienced sales team to help you with your 100Cr6 bearing steel questionsadn enquiry?by?Email or Telphone.?The 100Cr6 steel questions will be reply in 24 hours.

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